Watch Witness to the Mob (1998) HD Full Movie Free on SolarMovie. Watch Witness to the Mob (1998) online free. Underboss "The Bull" Gravano rises through the ranks of the Gambino mob. His brutal past catches up ...Underboss "The Bull" Gravano rises through the ranks of the Gambino mob. His brutal past catches up to him when he lands behind bars and faces the life-threatening decision to turn state's evidence against his former friend, John Gotti.